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Updated: Nov 15, 2025

Assessing Therapeutic Angiogenesis in a Murine Model of Hindlimb Ischemia
Published on: June 8, 2019
New Research Is Shining Light on How Collateral Arteries Form in the Heart: a Future Therapeutic Direction?
Kristy Red-Horse1,2, Soumyashree Das3
1Department of Biology, Stanford University, Stanford, CA, 94305, USA. kredhors@stanford.edu.
Purpose Of Review:
Collateral arteries create artery-artery anastomoses that could serve as natural bypasses that in the heart could relieve the various complications of ischemia heart disease. Recent work using animal models have begun to reveal details of how coronary collateral arteries form.
Recent Findings:
Mouse genetics has been used to study the cellular and molecular mechanisms of collateral artery development. Collateral arteries are not pre-existing in the mouse heart, and only form in response to injury. Myocardial infarction creates tissue hypoxia that triggers the expression of growth factors and chemokines that guide collaterogenesis. Collateral development is more robust in neonatal hearts when compared with adults, and contributes to neonatal heart regeneration. The identification of signaling pathways and cellular responses underlying coronary collateral artery development suggests potential translational strategies. Continued investigation into this subject could lead to the identification of targetable pathways that induce collateral arteries for cardiac revascularization.
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